Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1ee3db469a5591…

MALICIOUS

PDF

65.2 KB Created: 2020-11-27 12:06:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 91f15a26d34bd49eed1ff02f43284778 SHA-1: 1511f16043ef95bbe023d29fd39396379141d46d SHA-256: 4d1ee3db469a5591c70d099c235ad59828d8b7931c6af2c81b1fe6ff2deaec1a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9892

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffnew.ru/123?utm_term=hopkins+mann+6+theatre PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387421/normal_5f93a7518a530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401712/normal_5f9a6e1ac179e.pdfIn PDF document text
    • https://tebefatudu.weebly.com/uploads/1/3/4/3/134329870/fabelapi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465557/normal_5fa722583b2b8.pdfIn PDF document text
    • https://pazuvokase.weebly.com/uploads/1/3/4/6/134615635/e8e58a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/medadele/sly_cooper_cane_replica.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/8842888798.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/warefelebexexadepusep.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE67 5208 bytes
SHA-256: 9ca04081aba98bdf0f4ae75f2eca2fe355c1822b3cc8879a409a203234355b99
font_01_sfnt_off0000bfe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE6 10592 bytes
SHA-256: 5b82f54dac561b7ba6bdb7468a2e1c18f669dd416eae39c4deeb581124e1dc24
font_02_sfnt_off0000e390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE390 16160 bytes
SHA-256: 71fec8a3adfe41455811528c654ef740a0d97889ddd19e39e153b04b7507b7f0

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